// JScript File


function addEvent(obj, evType, fn){ 
 if (obj.addEventListener){ 
   obj.addEventListener(evType, fn, false); 
   return true; 
 } else if (obj.attachEvent){ 
   var r = obj.attachEvent("on"+evType, fn); 
   return r; 
 } else { 
   return false; 
 } 
}

addEvent(window,"load", initialize);

function initialize(){
addEvent(document.getElementById("button"),"click",remove_intro);
show_intro();

}

function show_intro(){
document.getElementById("intro").style.display = "block";
setTimeout("remove_intro()", 3000);
return false;
}

function remove_intro(){
document.getElementById("intro").style.display = "none";
return false;
}